Straneck's tyrannulet

Straneck's tyrannulet (Serpophaga griseicapilla), also known as the monte tyrannulet and grey-crowned tyrannulet, is a small species of bird in the family Tyrannidae. It is found in woodland and open habitats with scatted bushes and trees in south-central South America, but the details are still unclear. It breeds in Argentina, but may also breed in Bolivia. In addition to these countries, it has been recorded as a non-breeding visitor in Paraguay, and possibly Brazil and Uruguay (it is unclear if it is a regular non-breeding visitor or only an accidental visitor to the last two countries). Visually it closely resembles the white-crested tyrannulet, but its voice is distinctive and its tail shorter. Considerable taxonomic confusion has surrounded this species, which for a period mistakenly was referred to by the scientific name Serpophaga griseiceps, a junior synonym of Serpophaga munda. Consequently, the Straneck's tyrannulet only received its scientific name in 2007 despite having been known since the early 1990s.

Straneck's tyrannulet
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Tyrannidae
Genus: Serpophaga
Species:
S. griseicapilla
Binomial name
Serpophaga griseicapilla
Straneck, 2007

References
  1. BirdLife International. 2017. Serpophaga griseicapilla (amended version of assessment). The IUCN Red List of Threatened Species 2017: e.T22736536A118645226. https://dx.doi.org/10.2305/IUCN.UK.2017-3.RLTS.T22736536A118645226.en. Downloaded on 19 April 2018.


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